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The psychophysical properties are the formal qualities of objects, such as their intensity, size, and color (in terms of hue, saturation, brightness), or, generally speaking, properties that can be quantified.
For method accuracy estimation under the interference of sunlight, 800 images taken by the prototype before sunrise were analyzed, with the average brightness ranging from <120 to ~240 for the saturation brightness value of 255, as shown in Supplementary Fig. S9b.
The emotional movies provide continuous feedback such as changes in saturation, brightness and contrast of the movie in response to users' emotional states.
We also performed a quantitative evaluation using two metrics: the hue saturation brightness (HSV) histogram correlation and the structural similarity (SSIM) image quality index [30] (see Fig. 13).
The value of saturation, brightness and contrast is adjusted by 3% level and used by the video rendering filter for calculating the YUV values of the images.
The emotional movie means the movie that dynamically adjusts its visual appearances, such as saturation, brightness and contrast of the scene according to users' emotional states in real-time.
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Photographs are thresholded in HSB (Hue-Saturation-Brightness) colour space using ImageJ software (Abràmoff et al., 2004 ).
It's about light contrasting dark, saturation and brightness, a requisite attitude infusing those formal attributes".
For aperture or film colors, and light sources, the dimensions are hue, saturation and brightness; for surfaces, the dimensions are hue, chroma and value (lightness)—Munsell and hue, chromaticness and whiteness/blackness Swedish Natural Color System (NCS).
Moreover, it is common to find, in authoritative texts, definitions like: "Color attributes are attributes of visual sensations, e.g., hue, saturation and brightness"; "Hue: attribute of colour perception denoted by the terms yellow, red, blue, green and so forth"; "Brightness is the attribute of a visual sensation according to which a given visual stimulus appears to be more or less intense".
Two motorized pointers slide along metal bars to indicate the relative saturation and brightness of the color.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com